CN101394225B - Method and device for speech transmission - Google Patents
Method and device for speech transmission Download PDFInfo
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Abstract
The invention discloses a voice transmission method, which comprises the following steps: receiving a discontinuous voice frame from a sending terminal; and re-issuing the corresponding voice frame to a receiving terminal according to the type of the previous received voice frame, when receiving a bad frame or receiving no corresponding voice frame at the sending time. The invention can transform the discontinuous voice frame from the sending terminal to a continuous one under the circumstance that the downlink DTX on the receiving side is closed, so as to improve the accuracy of the global measuring result according to the continuous voice frame during the process of the downlink measurement on the receiving side, thereby improving the accuracy of switching or power-controlled determination.
Description
Technical field
The present invention relates to wireless communication technology field, relate in particular to a kind of method and apparatus of Tone Via.
Background technology
based on 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project) in communication system, as GSM (Global System for Mobile Communications, global system for mobile communications) in, sending out because conversation is two can not be always all in speech, therefore, can not be always all in transferring voice message (the following stage of talking be referred to as voice segments) on transmission channel, when there is no the speech information transmission (non-speech segment), also carrying out for both call sides can be felt conversing, usually the transmission background noise replaces speech message.Therefore, Tone Via is generally the alternate transmission of voice and background noise.At present, can adopt normal mode to carry out Tone Via, namely in whole communication process, voice and background noise all are encoded into 13kbit/s transmit.Yet, the defective of the prior art is: due to the user in whole communication process, usually only having time of 40% is voice segments, if and the background noise that transmits in non-speech segment is still 13kbit/s's, so not only can waste the resource of system, but also because will keep high-power transmission to increase the weight of intrasystem interference always.
Therefore, for overcoming the problems referred to above, a kind of method that prior art also discloses Tone Via is to adopt DTX (Discontinuous Transmission, discontinuous emission) pattern to carry out the transmission of speech, namely adopts the speech coding of 13kbit/s to transmit in voice segments; And in non-speech segment, the noise elimination indication frame (SID, Silence Descriptor) of the characterisitic parameter of comfort noise in background noise is only carried in transmission, and described SID only adopts the slow coding of 500bit/s to obtain.Usually, under the DTX pattern, transmitter side sends continuous speech frame in voice segments; And in non-speech segment, only send the SID frame.
Those skilled in the art will know that, under the DTX pattern, no matter whether open DTX, BTS (base station) and MS (mobile terminal) will carry out global measuring and the local measurement of up-downgoing, obtain corresponding test report, then BSC (base station controller) according to the indication about whether having opened DTX in described measurement report, selects the result of local measurement to switch or the power control judgement when having opened DTX; When not opening DTX, select the result of global measuring to switch or the power control judgement.
Yet, the inventor finds in prior art when converse between mobile phone A and mobile phone B in carrying out the invention process, when the residential quarter at mobile phone A place is up DTX unlatching, and when to be descending DTX closed in the residential quarter at mobile phone B place, there are the following problems at least if adopt DTX mode transfer speech:
when mobile phone A calling handset B, the Tone Via of mobile phone A is in the residential quarter at mobile phone B place, because mobile phone A is that up DTX opens, therefore, mobile phone A is discontinuous by speech frame and the SID frame that DTX sends, therefore what the BTS of mobile phone B by the residential quarter, place received is also discontinuous Speech frame, and because the DTX in mobile phone B is descending closing, therefore the BSC of mobile phone B side can select the result of global measuring for descending test, but what in fact receive due to mobile phone B is discontinuous Speech frame, so the result that global measuring records is inaccurate, if and use inaccurate global measuring result will cause as series of problems such as switching or power control judgement errors.
Summary of the invention
The purpose of the embodiment of the present invention is to provide a kind of method and apparatus of Tone Via, make and open and in situation that the DTX of receiving terminal closes as the DTX of transmitting terminal, the discontinuous Speech frame that comes from transmitting terminal can be changed into continuous Speech frame, to improve the accuracy of receiving terminal global measuring result.
The method of a kind of Tone Via that the embodiment of the present invention provides comprises:
Reception comes from the discontinuous Speech frame of transmitting terminal;
When receiving bad frame or when delivery time is not also received corresponding Speech frame, according to the type of a upper Speech frame of receiving, reissuing corresponding Speech frame to receiving terminal.
Based on technique scheme, the embodiment of the invention also discloses a kind of device for Tone Via, described device comprises:
Receiving element is used for receiving the discontinuous Speech frame that comes from transmitting terminal;
Reissue the unit, be used for receiving bad frame or when the local terminal delivery time is not also received corresponding Speech frame, according to the type of a upper Speech frame of receiving, reissuing corresponding Speech frame to receiving terminal when described receiving element.
Compared with prior art, the embodiment of the present invention has the following advantages:
the embodiment of the present invention is opened at the up DTX of transmitter side, and in the situation that the descending DTX of receiver side closes, receiver side is in the process that receives discontinuous Speech frame, when receiving bad frame or when delivery time is not also received corresponding Speech frame, can reissue corresponding Speech frame to receiving terminal according to the previous frame type that receives, thereby the discontinuous Speech frame that will come from transmitting terminal reverts to the continuous receiving terminal that sends to again, make receiver side when carrying out down-run survey, can be all continuous Speech frame due to what receive, thereby can improve the accuracy of global measuring result, thereby make the BSC of receiver side can be in the situation that descending DTX closes to improve according to this global measuring result switches or the accuracy of power control judgement.
Description of drawings
Fig. 1 is the FB(flow block) of an embodiment of the method for the present invention;
Fig. 2 is the FB(flow block) of another embodiment of the method for the present invention;
Fig. 3 is the FB(flow block) of another embodiment of the method for the present invention;
Fig. 4 is the FB(flow block) of a device embodiment of the present invention;
Fig. 5 is the FB(flow block) of another device of the present invention embodiment;
Fig. 6 is the FB(flow block) of another device of the present invention embodiment;
Fig. 7 be the present invention another install the FB(flow block) of embodiment.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the embodiment of the present invention is done further and elaborated.
As shown in Figure 1, the method of a kind of Tone Via based on the 3GPP system disclosed by the invention, two terminals of the sending and receiving that voice encoding and decoding mode is identical adopt the DTX pattern to carry out the transmission of speech, when being set to descending DTX, the BTS of residential quarter, receiving terminal place closes, when the BTS of the residential quarter at transmitting terminal place was made as up DTX unlatching, described method comprised:
S101: transmitting terminal by up DTX module to the discontinuous Speech frame of receiving terminal transparent transmission, wherein, because the up DTX of transmitting terminal is in opening, therefore, transmitting terminal is discontinuous by the Speech frame that up DTX module sends, and described Speech frame comprises speech frame, SID frame.
S102: the BTS of residential quarter, receiving terminal place is in the process that receives the discontinuous Speech frame of being sent by transmitting terminal, when receiving bad frame or when delivery time is not also received corresponding Speech frame, when a upper Speech frame of receiving is first kind Speech frame, carry out S103; When a upper Speech frame of receiving is the Second Type Speech frame, carry out 104.
Wherein, described first kind Speech frame can be speech frame or voice and the background converted frames between quiet, and described Second Type Speech frame is the Frame that carries the quiet information of background.
S103: receive that at upper one Speech frame is first kind Speech frame.When being for example converted frames between quiet of speech frame or voice and background, send infilled frame to described receiving terminal.
S104: being the Second Type Speech frame at a upper Speech frame of receiving, is for example when carrying the Frame of the quiet information of background, continues to send and a upper Speech frame that Speech frame is identical, the i.e. described Frame that carries the quiet information of background to described receiving terminal.
above-described embodiment is applicable to two terminals that voice coding modes is identical, adopt the speech transparent transmission mode in communication process, when transmitter side is that up DTX opens, and receiver side is descending DTX when closing, for example when being made as up DTX, opens the BTS of the residential quarter at transmitting terminal place, and the BTS of residential quarter, receiving terminal place is set to descending DTX when closing, the BTS of residential quarter, receiving terminal place can work as and receives bad frame or when delivery time is not also received corresponding Speech frame, can be according to the type of a upper Speech frame of receiving, reissue corresponding Speech frame to described receiving terminal, thereby the discontinuous Speech frame that will come from transmitting terminal reverts to continuous Speech frame, make the BTS of receiving terminal or residential quarter, receiving terminal place can be according to continuous Speech frame when the down-run survey, improve the accuracy of global measuring result, and then the BSC that guarantees receiver side can improve the accuracy of switching or power control judgement.
Two terminals of communicating by letter in above-described embodiment adopt the purpose of identical encoding and decoding speech to be: the convenient voice transparent transmission pattern (TrFo) end to end of setting up between two terminals of sending and receiving.Can save the conversion operations of the voice coding modes of network side like this, saving the hardware cost of network side encoding and decoding speech module avoids, but also reduced the number of times of encoding and decoding speech, and avoided the voice-loss that brings because additionally carry out encoding and decoding speech, guarantee voice quality.Therefore all adopt the voice transparent transmission pattern in the embodiment of the present invention, thereby need not to insert the source coding/decoding module.Certainly, for the different communicating pair of encoding and decoding speech, even do not adopt the voice transparent transmission pattern, can realize too the described Tone Via method of the embodiment of the present invention.
In addition, in the embodiment of the present invention, BTS described in above-mentioned S102, S103 and S104 can also by BSC, perhaps be replaced by other any one network nodes on the transmission path of two terminals of sending and receiving.
Those skilled in the art will know that, the Speech frame that different speech codings obtains is different, for example, voice coding modes is EFR/FR/HR (enhanced full rate speech codec/full-speed voice codec/half-rate speech codec), the Speech frame that obtains comprises speech frame and SID frame, wherein, described SID carries the quiet Frame of background; Be AMR (Adaptive MultiRate for voice coding modes, adaptive multi-rate), the Speech frame that obtains comprises speech frame, SIDFirst frame, Onset frame and SIDUpdate frame, wherein, described SIDFirst frame and Onset frame are voice and the background converted frames between quiet, described SIDFirst frame represents to be transformed into the SID frame from speech frame, and described Onset frame represents to be transformed into speech frame from the SID frame; Described SIDUpdate frame is the Frame that carries the quiet information of background.
The below carries out the present invention according to different voice coding modes and illustrates accordingly.
As shown in Figure 2, for inventing another based on the embodiment of the method for the Tone Via of 3GPP system, communicating pair in this embodiment all adopts the speech coding of EFR/FR/HR, and adopt the DTX pattern to carry out the transmission of speech, when being set to descending DTX, the BTS of residential quarter, receiving terminal place closes, when the BTS of the residential quarter at transmitting terminal place was made as up DTX unlatching, described method comprised:
S201: transmitting terminal by up DTX module to the discontinuous Speech frame of receiving terminal transparent transmission, wherein, because the up DTX of transmitting terminal is in opening, therefore, transmitting terminal is discontinuous Speech frame by up DTX module transmission, described Speech frame comprises first SID frame after speech frame, speech frame, and at TAF=1 speech frame or SID frame constantly.Wherein, the purpose that constantly sends Frame at TAF=1 is, is convenient to mobile phone and carries out the quiet recovery of background under local measurement and DTX pattern.Described Frame is constantly to be about to the Frame of transmission at TAF=1, can be speech frame or SID frame.
S202: the BTS of residential quarter, receiving terminal place is in the process that receives the discontinuous Speech frame of being sent by transmitting terminal, when receiving bad frame or when the delivery time of described BTS is not also received corresponding Speech frame, when a upper Speech frame of receiving is first kind Speech frame, carry out S203; When a upper Speech frame of receiving is the Second Type Speech frame, carry out 204.
Wherein, described first kind Speech frame can be speech frame, and described Second Type Speech frame can be for carrying the Frame of the quiet information of background.
Speech frame, or SID frame, and carry out following S203 or S204 according to the result that judgement obtains.
S203: be first kind Speech frame at a upper Speech frame of receiving.When for example being speech frame, send infilled frame to described receiving terminal.
S204: be the Second Type Speech frame at a upper Speech frame of receiving, when for example being the SID frame, continue to send described SID frame to described receiving terminal.
above-described embodiment is when receiving, when sending out two terminals and all adopting the voice coding modes of EFR/FR/HR, up DTX opens when transmitter side, and the descending DTX of receiver side is when closing, due to the BTS of receiver side when receiving bad frame or when delivery time is not also received Speech frame, by reissue infilled frame or SID frame to receiving terminal, thereby the discontinuous Speech frame of receiving can be reverted to the continuous receiving terminal that sends to, make receiving terminal when carrying out down-run survey, can be all continuous Speech frame due to what receive, thereby can improve the accuracy of global measuring result, thereby make the BSC of receiver side can improve according to this global measuring result the accuracy of switching or power control judgement.
Simultaneously, for the EFR/FR/HR speech coding, because the BTS of receiver side need to send to receiving terminal at the Frame that TAF=1 will come from transmitting terminal constantly, to carry out local measurement, and usually due to reasons such as transmission delay or errors, described BTS possibly can't receive Speech frame constantly at TAF=1.And the method that adopts the embodiment of the present invention can make receiver side at TAF=1 constantly, when not receiving the Speech frame that comes from transmitting terminal, can reissue corresponding Speech frame to receiving terminal according to the type of previous frame, thereby guarantee the accuracy of receiver side local measurement, and can recover in time the background mute frame.
As shown in Figure 3, for inventing another based on the embodiment of the method for the Tone Via of 3GPP system, communicating pair in this embodiment all adopts the speech coding of AMR, and adopt the DTX pattern to carry out the transmission of speech, when being set to descending DTX, the BTS of residential quarter, receiving terminal place closes, when the BTS of the residential quarter at transmitting terminal place was made as up DTX unlatching, described method comprised:
S301: transmitting terminal by up DTX module to the discontinuous Speech frame of receiving terminal transparent transmission, wherein, because the up DTX of transmitting terminal is in opening, therefore, transmitting terminal is discontinuous Speech frame by up DTX module transmission, and said Speech frame comprises speech frame, SIDFirst frame, Onset frame and SIDUpdate frame.
S302: the BTS of residential quarter, receiving terminal place receives in the process of the described discontinuous Speech frame of being sent by transmitting terminal, when receiving bad frame or when delivery time is not also received corresponding Speech frame, when a upper Speech frame of receiving is first kind Speech frame, carrying out S303; When a upper Speech frame of receiving is the Second Type Speech frame, carry out 304.
Wherein, described first kind Speech frame can be speech frame or voice and the background converted frames between quiet, and described Second Type Speech frame is the Frame that carries the quiet information of background.
S303: receive that at upper one Speech frame is first kind Speech frame, when being for example speech frame, SIDFirst frame or Onset frame, send infilled frame to described receiving terminal.
S304: be the Second Type Speech frame at a upper Speech frame of receiving, when for example being the SIDUpdate frame, continue to send described SIDUpdate frame to described receiving terminal.
above-described embodiment is when receiving, when sending out two terminals and all adopting the voice coding modes of AMR, up DTX opens when transmitter side, and the descending DTX of receiver side is when closing, due to the BTS of receiver side when receiving bad frame or when delivery time is not also received Speech frame, can be according to the type of a upper Speech frame of receiving, reissue infilled frame or SIDUpdate frame to receiving terminal, thereby the discontinuous Speech frame of receiving can be reverted to continuous Speech frame, make receiver side when carrying out down-run survey, can be all continuous Speech frame due to what receive, thereby the accuracy of raising global measuring result, thereby make the BSC of receiver side can improve according to this global measuring result the accuracy of switching or power control judgement.
Need to prove, above-mentioned Fig. 1 is the explanation of carrying out for voice coding method commonly used to embodiment of the method shown in Figure 3, certainly, the Speech frame that in addition obtains by other voice coding modes is applicable to technical solution of the present invention too, gives unnecessary details no longer one by one herein.
In addition, one of ordinary skill in the art will appreciate that all or part of step that realizes in above-described embodiment method is to come the relevant hardware of instruction to complete by program, described program can be stored in a computer read/write memory medium, simultaneously, software corresponding to this program also can be used as independently production marketing or use.Wherein, described storage medium can be ROM/RAM, magnetic disc, CD etc.
Based on technique scheme, the embodiment of the invention also discloses a kind of device that is used for Tone Via based on the 3GPP system, described device can be integrated on the base station, can also be integrated in two terminals of sending and receiving in communication process on any one network node in transmission path.Wherein, the up DTX that device of the present invention is applicable to transmitter side is opening, and therefore, what transmitter side sent by the DTX module is discontinuous Speech frame, and the descending DTX of receiver side is the situation of closed condition.As shown in Figure 4, install the structured flowchart of embodiment for the present invention is a kind of, described device comprises: receiving element 401, reissue unit 402, wherein:
Described receiving element 401 is used for receiving the discontinuous Speech frame that comes from transmitting terminal; Wherein, described transmitting terminal and receiving terminal can adopt identical encoding and decoding speech, can adopt the transparent transmission mode transmission; Described Speech frame can have different types due to the difference of voice coding modes.
The described unit 402 of reissuing is used for receiving bad frame or when delivery time is not also received corresponding Speech frame for transmission, according to the type of a upper Speech frame of receiving, reissuing corresponding Speech frame to receiving terminal when described receiving element 401.
the described device of above-described embodiment is in the process that receives discontinuous Speech frame, the described unit 402 of reissuing can received bad frame or not receive also that at delivery time corresponding Speech frame is when sending, can be according to the type of a upper Speech frame of receiving, reissue corresponding Speech frame to receiving terminal, thereby the discontinuous Speech frame that will receive reverts to the continuous receiving terminal that sends to, make receiver side when carrying out down-run survey, can be continuous Speech frame due to what receive, thereby can improve the accuracy of global measuring result, thereby make the BSC of receiver side can advance to improve according to this global measuring result the accuracy of switching or power control judgement.
In addition, one skilled in the art will appreciate that the voice coding modes that adopts due to communicating pair is different, the Speech frame type that therefore obtains is also different, for the ease of distinguishing, Speech frame is divided into first kind Speech frame in this enforcement, and the Second Type Speech frame.For example for gsm system, described first kind Speech frame is speech frame or voice and the background converted frames between quiet, and described Second Type Speech frame is the Frame that carries the quiet information of background.The described unit 402 of reissuing can be that first kind Speech frame or Second Type Speech frame are reissued corresponding Speech frame by judging a upper Speech frame of receiving.
Therefore for this situation, the present invention also provides a device embodiment, and as shown in Figure 5, this embodiment is on basis embodiment illustrated in fig. 4, and the described unit 402 of reissuing can specifically comprise:
First kind Speech frame transmitting element 4021 is used for sending infilled frame to receiving terminal when a upper Speech frame of receiving is first kind Speech frame.Wherein, for different voice coding modes, described first kind Speech frame can be speech frame or voice and the converted frames of background between quiet.For example, when adopting the EFR/FR/HR voice coding modes, described first kind Speech frame is speech frame; When adopting the ARM voice coding modes, described first kind Speech frame is speech frame, or voice and the converted frames of background between quiet, and wherein, the converted frames between described voice and background are quiet comprises SIDFirst frame and Onset frame.
In addition, the present invention also provides another device embodiment, and as shown in Figure 6, this embodiment is on basis embodiment illustrated in fig. 4, and the described unit 402 of reissuing can specifically comprise:
Second Type Speech frame transmitting element 4022 is used for when a upper Speech frame of receiving is the Second Type Speech frame, continues to send a described upper Speech frame of receiving to receiving terminal.Wherein, for different voice coding modes, described Second Type Speech frame can be for carrying the Frame of the quiet information of background.For example, when adopting the EFR/FR/HR voice coding modes, described Second Type Speech frame is the SID frame; When adopting the ARM voice coding modes, described Second Type Speech frame is the SIDUpdate frame.
Said apparatus embodiment can make receiver side when carrying out down-run survey, improves the accuracy of global measuring result, thereby makes the BSC of receiver side can improve according to this global measuring result the accuracy of switching or power control judgement.
Above-mentioned Fig. 4 is to device embodiment shown in Figure 6, when receiving bad frame or when delivery time is not also received corresponding Speech frame, directly reissue corresponding Speech frame according to the type of a upper Speech frame of receiving, therefore, the concrete rule of reissuing can set in advance before device is carried out its function.
In addition, above-mentioned embodiment illustrated in fig. 6 described in Second Type Speech frame transmitting element 4022 not only can be applicable in device embodiment shown in Figure 4, but also can be applied in device embodiment shown in Figure 5, namely with device embodiment shown in Figure 5 in first kind Speech frame transmitting element 4021 jointly be integrated in described reissuing in unit 402.
Based on this technical scheme, the invention discloses another kind of device embodiment, this device be applicable to when a upper Speech frame of receiving may be when dissimilar, can be when receiving bad frame or when delivery time is not also received corresponding Speech frame, at first judge the particular type of going up a Speech frame of receiving, and then reissue corresponding Speech frame according to judged result.As shown in Figure 7, on the basis of the device embodiment that obtains after described Second Type Speech frame transmitting element 4022 and 4021 combinations of described first kind Speech frame transmitting element, the unit 402 of reissuing in described device further comprises:
Judging unit 4023, be used for receiving bad frame or when delivery time is not also received corresponding Speech frame when described receiving element, judge that a upper Speech frame of receiving is first kind Speech frame, or Second Type Speech frame, when being first kind Speech frame, the described first kind Speech frame of instruction transmitting element 4021 is carried out described transmission infilled frame function; When being the Second Type Speech frame, the described Second Type Speech frame of instruction transmitting element 4022 is carried out described continuation and is sent a described upper Speech frame function.Wherein, described first kind Speech frame is speech frame or voice and the background converted frames between quiet, and described Second Type Speech frame is the Frame that carries the quiet information of background;
Said apparatus embodiment can will revert to the continuous receiving terminal that sends to again from the discontinuous Speech frame with transmitting terminal, make receiver side when carrying out down-run survey, can be continuous Speech frame due to what receive, thereby the accuracy of raising global measuring result, thereby make the BSC of receiver side can improve according to this global measuring result the accuracy of switching or power control judgement.
Above-described embodiment of the present invention does not consist of the restriction to protection range of the present invention.Any modification of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. the method for a Tone Via, is characterized in that, described method comprises:
The base station of residential quarter, receiving terminal place receives the discontinuous Speech frame that comes from transmitting terminal;
When receiving bad frame or when delivery time was not also received corresponding Speech frame, the base station of residential quarter, described receiving terminal place was reissued corresponding Speech frame according to the type of a upper Speech frame of receiving to receiving terminal;
Described type according to a upper Speech frame of receiving, reissue corresponding Speech frame to receiving terminal and specifically comprise:
When a upper Speech frame of receiving is first kind Speech frame, send infilled frame to receiving terminal;
Described first kind Speech frame is speech frame or voice and the background converted frames between quiet;
When a upper Speech frame of receiving is the Second Type Speech frame, continue to send a described upper Speech frame of receiving to receiving terminal;
Described Second Type Speech frame is the Frame that carries the quiet information of background.
2. the method for Tone Via as claimed in claim 1, is characterized in that,
When described Speech frame adopted enhanced full rate speech codec, full-speed voice codec or half-rate speech codec encodes, described first kind Speech frame was speech frame; Or
When described Speech frame adopted the adaptive multi-rate coding mode to encode, described first kind Speech frame was speech frame, noise elimination indication frame begins (SIDFirst) frame or speech frame begins (Onset) frame.
3. the method for Tone Via as claimed in claim 2, it is characterized in that, when described Speech frame adopted enhanced full rate speech codec, full-speed voice codec or half-rate speech codec encodes, described Second Type Speech frame was noise elimination indication (SID) frame; Or
When described Speech frame adopted the adaptive multi-rate coding mode to encode, described Second Type Speech frame was that noise elimination indication frame upgrades (SIDUpdate) frame.
4. as the method for the described Tone Via of any one in claims 1 to 3, it is characterized in that, described transmitting terminal is used identical voice encoding and decoding mode with receiving terminal, and before described reception action, described method also comprises:
Described transmitting terminal adopts transparent transmission mode to send discontinuous Speech frame.
5. a device that is used for Tone Via, is characterized in that, in the base station of residential quarter, receiving terminal place, described device comprises:
Receiving element is used for receiving the discontinuous Speech frame that comes from transmitting terminal;
Reissue the unit, be used for receiving bad frame or when delivery time is not also received corresponding Speech frame, according to the type of a upper Speech frame of receiving, reissuing corresponding Speech frame to receiving terminal when described receiving element;
The described unit of reissuing comprises:
First kind Speech frame transmitting element is used for sending infilled frame to receiving terminal when a upper Speech frame of receiving is first kind Speech frame;
Described first kind Speech frame is speech frame or voice and the background converted frames between quiet;
Second Type Speech frame transmitting element is used for when a upper Speech frame of receiving is the Second Type Speech frame, continues to send a described upper Speech frame of receiving to receiving terminal;
Described Second Type Speech frame is the Frame that carries the quiet information of background.
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| CN 200710151252 CN101394225B (en) | 2007-09-17 | 2007-09-17 | Method and device for speech transmission |
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| CN 200710151252 CN101394225B (en) | 2007-09-17 | 2007-09-17 | Method and device for speech transmission |
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| CN105917720B (en) * | 2014-01-27 | 2019-10-22 | 华为技术有限公司 | Wireless communications method, access point and website |
| WO2015109595A1 (en) | 2014-01-27 | 2015-07-30 | 华为技术有限公司 | Channel contention method, access point, and station |
| EP2980790A1 (en) * | 2014-07-28 | 2016-02-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for comfort noise generation mode selection |
| FR3033967B1 (en) * | 2015-03-16 | 2018-04-20 | Schneider Electric Industries Sas | METHOD OF MONITORING COMMUNICATION BETWEEN TRANSMITTING EQUIPMENT AND RECEIVER EQUIPMENT |
| CN107682360B (en) * | 2017-10-31 | 2020-09-08 | 维沃移动通信有限公司 | Voice call processing method and mobile terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1174636A (en) * | 1995-01-31 | 1998-02-25 | 诺基亚流动电话有限公司 | Method to realize discontinuous transmission in mobile phone system |
| CN1514998A (en) * | 2001-01-31 | 2004-07-21 | �����ɷ� | Method and apparatus for inter operability between voice tansmission systems during speech inactivity |
| CN1805565A (en) * | 2005-01-14 | 2006-07-19 | 华为技术有限公司 | Decoding method for adaptive multi-rate speech coding in non-consecutive transmitting mode |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1174636A (en) * | 1995-01-31 | 1998-02-25 | 诺基亚流动电话有限公司 | Method to realize discontinuous transmission in mobile phone system |
| CN1514998A (en) * | 2001-01-31 | 2004-07-21 | �����ɷ� | Method and apparatus for inter operability between voice tansmission systems during speech inactivity |
| CN1805565A (en) * | 2005-01-14 | 2006-07-19 | 华为技术有限公司 | Decoding method for adaptive multi-rate speech coding in non-consecutive transmitting mode |
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